Guanghao Zhang created HBASE-15515:
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Summary: Improve LocalityBasedCandidateGenerator in Balancer
Key: HBASE-15515
URL: https://issues.apache.org/jira/browse/HBASE-15515
Project: HBase
Issue Type: Bug
Affects Versions: 2.0.0, 1.3.0
Reporter: Guanghao Zhang
Assignee: Guanghao Zhang
Priority: Minor
Fix For: 2.0.0
There are some problems which need to fix.
1. LocalityBasedCandidateGenerator.getLowestLocalityRegionOnServer should skip
empty region.
2. When use LocalityBasedCandidateGenerator to generate Cluster.Action, it
should add random operation instead of pickLowestLocalityServer(cluster).
Because the search function may stuck here if it always generate the same
Cluster.Action.
3. getLeastLoadedTopServerForRegion should get least loaded server which have
better locality than current server.
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